I quickly loaded it up on my i-mate SP5m, since it has integrated Wi-Fi, and watched TV on my QVGA Smartphone display. This latest version will be in beta for about 30 days, and then the SlingPlayer Mobile client will cost US$29.99.

It wasn't clear if your current SlingPlayer Mobile registration code will work on either a Pocket PC or a Smartphone, but I'll ask my contact more about the pricing plan after the beta expires. When Sling Media released the Pocket PC version, the company gave a free code to those who already purchased a SlingBox.

I also discovered you have to update the firmware of your SlingBox before the Mobile version will work on your WM Smartphone. The new firmware provides support for the new mobile client, adds more remote functionality, and updates the SlingBox for NTSC countries as the SlingBox goes international. There were also other bug fixes and improvements in the firmware update.